Prevalence of tumours of the maxillomandibular complex diagnosed in a reference center in Brazil

Tumors of the maxillomandibular complex are a heterogeneous group of lesions with a wide spectrum of clinical and histopathological characteristics. Aim: To evaluate the prevalence of odontogenic and non-odontogenic tumors associated with maxillary bones in a Reference Center for Oral Lesions. Methods: A cross-sectional study based on the medical records of a Reference Center for Oral Lesions at the State University of Feira de Santana, from 2006 to 2018. The data was initially analyzed in a descriptive manner. For bivariate analysis, Pearson's chi-square test was applied. The level of significance was set at 5%, where p≤ 0.05 is considered significant. Results: The prevalence of tumors was 2.27%. The average age of the individuals was 22.2 (± 15.1) years, the majority being up to 39 years (79.59%) and female (69.40%). A statistically significant difference was observed in relation to age (p = 0.00), as well as regarding the location of tumors in the anterior or posterior region (p = 0.02). Odontogenic tumors were benign, with odontoma being most frequent (46.90%), followed by ameloblastoma (16.30%). As for the non-odontogenic, neurofibroma (4.10%) and osteoma (4.10%) were the most common across the benign, while osteosarcoma accounted for 6.10% of cases. Conclusion: Odontogenic tumors were the most frequent in women, with age up to 39 years, odontoma being most common in the posterior region of the mandible. Among nonodontogenic tumors, central neurofibroma and osteoma were the most common. Osteosarcoma was more frequent in men over 40 years old and in the mandible region

Incidencia de patologías bucomaxilares en un período de aislamiento social preventivo y obligatorio de la pandemia COVID-19 / Incidence of buccomaxillofacial pathologies in a period of preventive and mandatory social isolation due to the COVID-19 pandemic

La urgencia en la práctica odontológica incluye no solo la atención de pacientes con dolor e infección, sino también la atención de pacientes que presentan patologías con presunción diagnóstica de agresividad y/o malignidad. El objetivo de este estudio fue analizar la incidencia de las patologías bucomaxilares biopsiadas en el Servicio de Urgencias y Orientación de Pacientes (SUyOP), y diagnosticadas en el Laboratorio de Patología Quirúrgica de la Cátedra de Anatomía Patológica (LPQ-CAP) de la Facultad de Odontología de la Universidad de Buenos Aires (FOUBA), en un período del Aislamiento Social Preventivo y Obligatorio de la pandemia COVID-19. Se realizó un estudio observacional, descriptivo y retrospectivo de pacientes que se presentaron para la atención odontológica en el período de tiempo comprendido entre el 20 de marzo al 21 de junio de 2020. Se registraron los pacientes que presentaron lesiones bucales con indicación de biopsia. Del total de pacientes evaluados (4854), 48 presentaron patologías con presunción diagnóstica de agresividad y/o malignidad. Las patologías más frecuentes fueron las neoplasias malignas (21 casos), siendo la entidad prevalente el carcinoma de células escamosas. Para el LPQ-CAP, las muestras biópsicas remitidas por el SUyOP representaron el 44% del total de las muestras recibidas. Si bien la incidencia de patologías bucomaxilares biopsiadas y diagnosticadas fue baja (1%) es de destacar que el diagnóstico histopatológico correspondió, en la mayoría de los casos, a patologías neoplásicas. De allí la importancia de la atención de urgencia a pacientes que presentan lesiones con presunción diagnóstica de malignidad/agresividad (AU)

Odontogenic tumors: a 14-year retrospective study in Santa Catarina, Brazil

Odontogenic tumors (OTs) are lesions that develop exclusively on maxillary bones, and form a heterogeneous group. They vary from hamartomatous lesions to benign and malign tumors. Although they are rarely observed in dentistry clinics, it is extremely important for the dentist to be aware of them. The aim of this study was to investigate the incidence of odontogenic tumors diagnosed in the population of Florianópolis, Santa Catarina, Brazil. Cases of odontogenic tumors were selected from the anatomopathological diagnostic services at Federal University of Santa Catarina from 1998 to 2011. Clinical data on these cases were collected from biopsy reports and patient files. Seventy-eight cases of odontogenic tumors were surveyed. Of these diagnoses, 51% were keratocystic odontogenic tumors (KCOTs); the remaining cases were mainly ameloblastomas and odontomas. The most frequently observed lesion in this retrospective study was KCOT (more than half of cases). Thus, this study shows that modifying the classification of the OTs altered the frequency of the lesions, possibly making KCOT the most common lesion observed in diagnostic services worldwide.

Odontomes-a descriptive case series on 38 patient

The objectives of the study were to evaluate the presentation pattern of odontomes of the jaws and their distribution by gender, age, site and histopathological types. A descriptive study was under taken in the Department of Oral and Maxillofacial Surgery, Khyber College of Dentistry, Peshawar over a period of 7 years. Information regarding the variables of the study i.e. gender, age, site distribution, histopathological types. and clinical features at the time of presentation were recorded. A total of 38 patients were recruited in the study. Males were predominantly affected by the condition with-the male to female ratio of 2.8: 1. The age range of the patients was from 7-26 years with time mean age of 16.52 +/- 5.24 years. The second decade of life was the most common age, group affected i.e. 63.16%. posterior mandible was the-predominant site .for odontomes of the jaw i.e. 52.63% while anterior maxilla was involved in 34.21% cases. Amongst the two histological types, complex odontomes were more common i.e. 58% while 42% were compound odontomes. The presenting complaint of the patients comprised of extra and intra oral swelling [47. 37%], pain [26.32%] and pus discharge [5.26%,]. While in 21.05% cases of odontomes were a chance radiographic finding. Majority of the odontomes were of compound variety with male predilection. Swelling has been the most common presenting complaint, while in a few patients they were chance radiographic findings

Ameloblastoma en población del noreste de Brasil: un estudio retrospectivo de 60 casos / Ameloblastoma present in a northeast Brazilian population: a retrospective study of 60 cases

El ameloblastoma es un tumor de epitelio odontogénico, caracterizado por la invasión local y aumento de la tasa de recidiva. Por esto se realizó este estudio descriptivo para determinar el comportamiento de los ameloblastomas en nuestro medio. Método: estudio retrospectivo de 17 años basado en los datos existentes de los archivos del Departamento Oral de Patología. Se analizaron los archivos de pacientes de enero de 1992 a mayo de 2009, con un diagnóstico definitivo de ameloblastoma. Fué recogida la información respecto al sexo, raza, presencia de síntomas, ubicación anatómica y extensión. Resultados: dentro de los 60 pacientes con ameloblastoma se observó, mayor incidencia en la tercera década de vida (28,3 por ciento). Las mujeres fueron más comprometidas que los hombres, con una proporción 1,22:1. La mayoría de lesiones fueron observadas en la raza blanca (51,7 por ciento). El sitio más habitual por la ocurrencia de tumor fue la mandíbula (85 por ciento). Los pacientes fueron sintomáticos en el 75 por ciento. La mayoría de pacientes presentaron lesiones de 3,5 a 6,0 centímetros de extensión (55 por ciento). Conclusiones: el ameloblastoma es mayormente observado en mujeres, en la tercera década de la vida y en la mandíbula. Las diferencias con otros estudios entre el sexo, la edad, raza, extensión, localización anatómica y los síntomas pueden ser atribuidos a las diferencias geográficas(AU)

The ameloblastoma is a tumor originated from odontogenic epithelium, characterized by local invasion and increased rates of recurrence. Methods: The 17-year retrospective study was based on existing data from the archives of Oral Pathology Department. Files of patients of January 1992-May 2009 with a definitive diagnostic of ameloblastoma were assessed. Information regarding gender, race, presence of symptoms, anatomic location and extent was documented. Results: Within the 60 patients with ameloblastoma observed, the age peak of tumor incidence was the third decade of life (28.3 percent). Females were more prominent than males, with a ratio 1.22:1. The majority of lesions were showed in Caucasians patients (51.7 percent). The most prevalent site for tumor occurrence was the mandible (85 percent). Symptomatic patients performed a total of 75 percent. The majority of patients had lesions from 3.5 to 6.0 cm of extension (55 percent). Conclusions: The ameloblastoma is more observed in females, in the third decade of life and in the mandible. The differences with other studies between gender, age, race, extent, anatomic location and symptoms can be attributed to geographic variations(AU)

Tumores de la cavidad orofacial en pediatría: revisión de 156 pacientes / Tumors of the orofacial cavity in pediatrics: a review of 156 patients

Se presenta un estudio retrospectivo de 156 pacientes con tumroes que se manifestaron en la cavidad bucal, con localización inicial en maxilares o partes landas. La edad promedio fue 9 años y 6 meses (rango 1 día a 17 años). El 62 por ciento se presentó en varones. La localización inicial de los tumores fue ósea y en partes blandas en el 50 por ciento de los casos: 102 pacientes tuvieron lesiones benignas y 54 lesiones malignas. Las manifestaciones al ingreso fueron: tumor palpable o visible (43 por ciento), tumor más dolor (22 por ciento), dolor (13 por ciento) y otros como caída de dientes, parálisis, fiebre o asimetría facial (22 por ciento). La rutina de estudio comprendió radiografía panorámica de maxilar, centellografía ósea (gamma-cámara) con tecnesio 99, tomografía axial computada (TAC) y resonancia nuclear magnética (RNM). Los pacientes fueron tratados en forma multidisciplinaria siendo la cirugía (punción aspiración con aguja fina, biopsia y/o resección) el procedimiento inicial en la mayoría de ellos. El manejo se realizó basándose en un algoritmo...

Malignant oral-maxillary neoplasm in children and adolescents: a retrospective analysis from the biopsy service at a school of dentistry in Argentina / Neoplasias malignas bucomaxilares en niños y adolescentes: análisis retrospectivo del servicio de biopsias de una facultad de odontología en Argentina

There are few studies on oral-maxillary lesions in children and adolescents, and reports on malignant neoplasms are scarce. Comparison of available data is difficult due to the different criteriaand racial-ethnic origin of the populations in each study. The aim of this work was to perform a retrospective study of malignant oral neoplasms in patients aged up to 20 years diagnosed at a center specialized in histopathological diagnosis of oral diseases between 1990 and 2005. The 24 retrieved cases accounted for 0.9% (n: 2434) of total biopsies in this age group during that period, and for 8.4% (n: 236) of the tumors. Mean age of the wholepopulation was 9.2 years with even distribution according to sex. The most frequent tumor types were extranodal non-Hodgkin lymphoma (7 cases), osteosarcoma (4 cases) and Ewing sarcoma (3 cases). These data can be considered representative of our population of children and adolescents and serve as a basis for recognitionand presumptive diagnosis in clinical practice.

Los estudios sobre neoplasias bucomaxilares en niños y adolescentes son relativamente poco comunes y escasos los reportes sobre neoplasias malignas. Los datos disponibles son difíciles de comparar debido a diferencias en los criterios de análisis utilizados en cada estudio y origen racial-étnico de la población. El objetivo del presente trabajo fue realizar un estudio retrospectivo de neoplasias malignas bucales en pacientes de hasta 20 años de edad diagnosticados en un centro especializado en diagnóstico anatomopatológico bucal entre 1990 y 2005. Los 24 casos hallados representaron el 0.9 por ciento (n: 2434) del total de biopsias de este grupo etario en ese periodo y el 8.4 por ciento (n: 286) de los tumores. La edad media general fue de 9.2 años, con similar distribución según sexo. Los tipos tumorales más frecuentes fueronlos Linfomas No Hodgkin extraganglionares (7 casos), el Osteosarcoma (4 casos) y el Sarcoma de Ewing (3 casos). Estos datos pueden ser considerados representativos de nuestra po blación infanto juvenil y sirven de base para a su recono ci miento y diagnostico presuntivo en la práctica clínica.

Estudo dos casos de ameloblastomas diagnosticados no Laboratorio de Patologia Bucal da Faculdade de Odontologia da Universidade Federal do Rio Grande do Sul / Study of ameloblastoma's cases diagnosed in the Oral Pathology Laboratory of the Faculty of Dentistry of the Federal University of Rio Grande do Sul

Com o objetivo de obter um perfil de indivíduos afetados por ameloblastoma e comparar os resultados com os estudos encontrados na literatura, realizou-se uma análise retrospectiva dos casos de ameloblastomas do Laboratório de Patologia Bucal da FO-UFRGS. Os resultados revelaram uma maior ocorrência em indivíduos jovens, do sexo feminino, raça branca, localização predominantemente na mandíbula e tipo histológico plexiforme. Conclui-se que, o perfil dos pacientes com ameloblastoma diagnosticados no Laboratório de Patologia Bucal da FO-UFRGS concorda com o perfil de pacientes com ameloblastoma diagnosticado em outras partes do mundo e relatado na literatura diferindo apenas no que se refere a faixa etária no momento do diagnóstico

Odontogenic tumours from two centres in Jamaica. A 15-year review

This is the author's experience with odontogenic tumours in Jamaica during the 15-year period, 1980-1995, with special emphasis on the clinicopathological presentation, radiology and outcome of treatment. A retrospective review of histopathological reports, radiographs and case notes of patients with jaw tumours presenting to the Kingston Public Hospital and Cornwall Regional Hospital (the two hospitals in Jamaica with a maxillofacial surgery department) are presented. The study included 70 patients with histologically confirmed odontogenic tumours out of a total of 293 with tumours of the mouth and jaw, of which 123 were of odontogenic origin. We recorded the following; ameloblastoma (n = 47, 67, M:F = 1:1), recurrent ameloblastoma (n = 12, 17.1) odontogenic myxoma (n = 3, 4.3, M:F = 2:1), odontongenic fibroma (n = 2, 2.9, both female), adenomatoid odontogenic tumour (n = 3, 4.3 M:F = 1:2) ameloblastic fibroma (n = 2, 2.9, M:F = 1:1) and ameloblastic carcinoma (n = 1, 1.4, a male). Of all these tumours, only ameloblastomas recurred. Further research is required to explain the high incidence of ameloblastoma, and why it has a predilection for people of low socioeconomic status in Jamaica

Incidência de neoplasias BMF / Incidence of malignant tumors in BMF

O autor pesquisou os arquivos de 10 anos de um Centro de Prevenção ao Câncer, manipulando os dados constantes de cerca de 18.000 laudos de exames histopalógicos e citológicos, objetivando extrair informações sobre incidência de neoplasias em geral, estratificando as neoplasias localizadas na estrutura Buco-Maxilo-Facial, das quais resultou estudo detalhado e único